Python qgis.core.QgsRectangle() Examples

def zoomTo(self, srcCrs, lat, lon):
        canvasCrs = self.canvas.mapSettings().destinationCrs()
        transform = QgsCoordinateTransform(srcCrs, canvasCrs, QgsProject.instance())
        x, y = transform.transform(float(lon), float(lat))

        rect = QgsRectangle(x, y, x, y)
        self.canvas.setExtent(rect)

        pt = QgsPointXY(x, y)
        self.highlight(pt)
        self.canvas.refresh()
        return pt 

def geom_to_geo(geom):
    crs_src = QgsCoordinateReferenceSystem(QgsProject.instance().crs())
    crs_dst = QgsCoordinateReferenceSystem(4326)
    proj2geo = QgsCoordinateTransform(crs_src, crs_dst, QgsProject.instance())

    if isinstance(geom, QgsPointXY):
        return proj2geo.transform(geom)
    elif isinstance(geom, QgsRectangle):
        return proj2geo.transformBoundingBox(geom)
    else:
        return geom.transform(proj2geo) 

def test_copy(self):
        source_folder = tempfile.mkdtemp()
        export_folder = tempfile.mkdtemp()
        shutil.copytree(os.path.join(test_data_folder(), 'simple_project'), os.path.join(source_folder,
                                                                                         'simple_project'))

        project = self.load_project(os.path.join(source_folder, 'simple_project', 'project.qgs'))
        extent = QgsRectangle()
        offline_editing = QgsOfflineEditing()
        offline_converter = OfflineConverter(project, export_folder, extent, offline_editing)
        offline_converter.convert()

        files = os.listdir(export_folder)

        self.assertIn('project_qfield.qgs', files)
        self.assertIn('france_parts_shape.shp', files)
        self.assertIn('france_parts_shape.dbf', files)
        self.assertIn('curved_polys.gpkg', files)
        self.assertIn('spatialite.db', files)

        dcim_folder = os.path.join(export_folder, "DCIM")
        dcim_files = os.listdir(dcim_folder)
        self.assertIn('qfield-photo_1.jpg', dcim_files)
        self.assertIn('qfield-photo_2.jpg', dcim_files)
        self.assertIn('qfield-photo_3.jpg', dcim_files)
        dcim_subfolder = os.path.join(dcim_folder, "subfolder")
        dcim_subfiles = os.listdir(dcim_subfolder)
        self.assertIn('qfield-photo_sub_1.jpg', dcim_subfiles)
        self.assertIn('qfield-photo_sub_2.jpg', dcim_subfiles)
        self.assertIn('qfield-photo_sub_3.jpg', dcim_subfiles)

        shutil.rmtree(export_folder)
        shutil.rmtree(source_folder) 

def set_layer_extent(map_canvas, gpx_layer):
    """
    Sets the layer extent and zooms in to 1:1 scale
    :param gpx_layer: GPX layer object
    :param map_canvas: Map canvas object
    :return: None
    :rtype: None
    """
    x_min, x_max, y_min, y_max = gpx_layer.GetExtent()
    extent = q_core.QgsRectangle(x_min, y_min, x_max, y_max)
    extent.scale(1.1)
    map_canvas.setExtent(extent)
    map_canvas.refresh() 

def centerObject(feature, zoom=None):
    """
        Centers the map view on a given object.

        https://developers.google.com/earth-engine/api_docs#map.centerobject

        Uses:
            >>> from ee_plugin import Map
            >>> Map.centerObject(feature)
    """


    feature = ee.Feature(feature)

    if not zoom:
        # make sure our geometry is in geo
        rect = feature.geometry().transform(ee.Projection('EPSG:4326'), 1)

        # get coordinates
        coords = rect.bounds().getInfo()['coordinates'][0]
        xmin = coords[0][0]
        ymin = coords[0][1]
        xmax = coords[2][0]
        ymax = coords[2][1]

        # construct QGIS geometry
        rect = QgsRectangle(xmin, ymin, xmax, ymax)

        # transform rect to a crs used by current project
        crs_src = QgsCoordinateReferenceSystem(4326)
        crs_dst = QgsCoordinateReferenceSystem(QgsProject.instance().crs())
        geo2proj = QgsCoordinateTransform(crs_src, crs_dst, QgsProject.instance())
        rect_proj = geo2proj.transform(rect)

        # center geometry
        iface.mapCanvas().zoomToFeatureExtent(rect_proj)
    else:
        # set map center to feature centroid at a specified zoom
        center = feature.geometry().centroid().coordinates().getInfo()
        setCenter(center[0], center[1], zoom) 

def center_to_point(self, point):
        canvas = self.iface.mapCanvas()
        new_extent = QgsRectangle(canvas.extent())
        new_extent.scale(1, point)
        canvas.setExtent(new_extent)
        canvas.refresh() 

def toQgsRectangle(self):
        return QgsRectangle(self.xmin, self.ymin, self.xmax, self.ymax) 

def extent(self):
        size = self.tsize1 / 2 ** (self.zoom - 1)
        if self.serviceInfo.tile_ranges is None:
            return QgsRectangle(self.xmin * size - self.tsize1, self.tsize1 - (self.ymax + 1) * size,
                                (self.xmax + 1) * size - self.tsize1, self.tsize1 - self.ymin * size)
        else:
            originX = self.serviceInfo.originX
            originY = self.serviceInfo.originY
            return QgsRectangle(originX + self.xmin * size, originY - (self.ymax + 1) * size,
                                originX + (self.xmax + 1) * size, originY - self.ymin * size) 

def getTileRect(self, zoom, x, y):
        size = self.tsize1 / 2 ** (zoom - 1)
        return QgsRectangle(x * size - self.tsize1, self.tsize1 - y * size, (x + 1) * size - self.tsize1,
                            self.tsize1 - (y + 1) * size) 

def on_zoomButton_clicked(self):
        """
        Slot used to zoom the mapcanvas to the features associated to a complex
        """
        #case no item is selected we should warn the user
        if len(self.treeWidget.selectedItems()) == 0:
            QMessageBox.warning(self.iface.mainWindow(), self.tr("Warning!"), self.tr("Please, select an item to zoom."))
            return

        item = self.treeWidget.selectedItems()[0]
        #checking if the item is a complex (it should have depth = 2)
        if self.depth(item) == 2:
            bbox = QgsRectangle()
            for i in range(item.childCount()):
                aggregated_item = item.child(i)
                aggregated_class = aggregated_item.text(0)
                #getting the layer the needs to be updated
                aggregated_layer = None
                layers = self.iface.mapCanvas().layers()
                for layer in layers:
                    if layer.name() == aggregated_class:
                        aggregated_layer = layer
                        break

                if not aggregated_layer:
                    QMessageBox.warning(self.iface.mainWindow(), self.tr("Warning!"), self.tr("The associated classes must be loaded in the table of contents."))
                    return

                for j in range(aggregated_item.childCount()):
                    id = aggregated_item.child(j).text(0)
                    freq = QgsFeatureRequest()
                    freq.setFilterFid(int(id))
                    feature = next(layer.getFeatures( freq ))
                    if j==0 and i == 0:
                        bbox=feature.geometry().boundingBox()
                    bbox.combineExtentWith(feature.geometry().boundingBox())

            self.iface.mapCanvas().setExtent(bbox)
            self.iface.mapCanvas().refresh()
        else:
            QMessageBox.warning(self.iface.mainWindow(), self.tr("Warning!"), self.tr("Select a complex."))
            return